Fuel mixer for internalcombustion engines



June 3, 1952 J. REINDL 2,598,832

FUEL MIXER FOR INTERNAL-COMBUSTION ENGINES I Filed June 27, 1949 //V V'N TOE JOJEP/V Rim 04,

HTTO/Q/VEY Patented June 3, 1952 FUEL MIXER FOR INTERNAL- COMBUSTION ENGINES Joseph Reindl, Topanga, Calif.

Application June 27, 1949, Serial No. 101,636

2 Claims.

The present invention relates generally to gaseous fuel mixers for internal combustion engines; and is moreparticularly concernedwith devices of this kind wherein a vortex or whirling action is imparted to the gaseous mixture prior to delivering to the engine.

It is one object of the herein described invention to provide a device which is simple in construction, inexpensive to manufacture, and efficient in operation, the device being adapted to be interposed between the intake manifold and carburetor of a gas engine for the purpose of producing a more thorough mixture of the fuel and air, with the result that more efficient engine operation will be obtained and maximum power will be developed with a minimum consumption of fuel.

Still another object is to provide a simple device for the above stated purpose which is devoid of any moving parts that might wear out, become detached in use and be drawn into the engine with damaging effect; which will operate efiiciently at high engine speeds without choking the flow of fuel admixture; and which will operate in such manner that recondensation of the mixed fuel will be avoided.

Further objects of the invention will be brought out in the following part of the specification, wherein detailed description is for the purpose of fully disclosing the invention without placing limitations on the scope of the invention defined in the appended claims.

Referring to the drawings, which are for illustrative purposes only:

Fig. 1 is a longitudinal section through a connection joint between the intake manifold and carburetor for supplying fuel to an internal combustion engine showing a device embodying the features of the present invention mounted therem;

Fig. 2 is a sectional view taken transversely of the same, the section being taken substantially on line 2-2 of Fig. 1; and

Fig. 3 is a vertical section through the device of the present invention, taken substantially on line 3-3 of Fig. 2.

For purposes of illustration, the drawing illustrates a device as generally indicated at A embodying the features of the present invention, this device being operatively associated with a fuel conducting connection between a conventional carburetor (not shown) and the intake manifold (not shown) of an internal combustion engine.

More specifically, the fuel connection is shown as including a carburetor connection Ill and an inlet manifold connection II in the form of fuel conducting pipes joined by conventional joint flanges l2l2. As in the conventional joint, the flanges l2l2 are secured in confronting faced relation and clamped together by suitable clamping bolts l3l3, the usual sealing gasket [4 being interposed between the flanges to prevent leakage.

A device of the present invention is constructed so that it may be readily attached and removed without the necessity of having to provide additional connectors or securing means, and advantage is taken of the usual joint flange construction to provide a support for the mounting of the device.

As shown, there is provided a thin plate or asket [5 of suitable material, having a peripheral configuration similar to that of the sealing gasket in order that the sealing gasket and gasket l5 may be mounted in the joint in superposed relation, as shown.

The gasket l5 is centrally provided with a fluid flow passage or opening [6 of a diameter corresponding with the internal diameter of the connections l0 and II so that, when the gasket I5 is mounted in the joint, the passage I6 will be axially aligned and in registration with the internal bores of the connections [0 and II.

A spirally formed blade I! is supported from the gasket l5, this blade being constructed of suitable material as by twisting a flat rectangular strip or otherwise forming the blade with a twist between its ends l8 and [9, so that end edges will be formed which are angularly positioned about a longitudinal axis in 90 relationship. One end of the spirally formed .blade IT, in this case end I8, is inserted into the fluid flow passage or opening I6 and secured as by welding at points 2020 to rigidly support the blade in a position extending outwardly from one side of the gasket l5.

In Fig. 1, the spiral blade I1 is mounted so as to extend in a down stream direction. The device, however, will operate with the same efficiency when installed in a fuel connection so as to extend upstream from the gasket l5.

From a consideration of the device as described above, it will be seen that the action of the spiralled blade I! is to rotate the fuel stream through an angle of 90 as it passes from one end of the blade to the other, and that in accomplishing this twisting effect, the cross-sectional area of the stream is reduced only to the extent of the cross-sectional area of the material forming the spiralled blade. In other words, any

choking tendency is reduced to such small value that it has little if any practical effect upon the free flow of the stream. I have determined that the efiiciency and success of my device results from a whirling or twisting movement which is imparted to the fuel stream, and that this will result in a more thorough mixing of the fueland air and that this will give more efficient engine operation and greater power will be developed with a minimum consumption of fuel.

rally formed blade having an end-to-end length substantially equal to 1.1 times the blade diameter, said blade being spirally formed and having substantially a 90 twist; and means for securing said blade within said intake passage so that said blade extends longitudinally thereof.

2. A fuel mixing device for internal combustion engines adapted to be introduced into a flanged joint in a connection between a carburetor outlet and manifold intake of the engine,

' comprising: a mounting gasket adapted to be Further, I have determined that the length of the spiralled plate in relation to its diameter is'a critical consideration, and that the most effficient and best operation is obtained when the length of the spiralled plate between its ends is substantially 1.1 times the diameter of the passage" IE or the bore of the fuel connection in which the de-' vice is mounted.

While the twist of the blade has been described as being 90, it should be noted that the amount of twist is very critical and when the twist is varied'in excess of two degrees either way from 90, there-is a material change in the efiiciency of operation of the device. The twist of the blade,

forbest operation, should therefore be maintained within the limits of 88 to 92.

I claim as my invention:

1. A fuel mixing device for internal combustion engines adapted to be mounted in the fuel intake passage of the engine, comprising: a spi- REFERENCES CITED The following references are of record in the file of-thispatent:

UNITED STATES PATENTS Number Name Date 1,678,327 carlsto'n' Jul'y 2&1, 1928 1,951,812 Smith Mar. 20, 1934- 

